M.E Electrical (Power Electronics and Drives) - BITS Pilani

ibexforeheadElectronics - Devices

Nov 24, 2013 (3 years and 8 months ago)

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Course Description

M
.E.
Electrical

with
specialization in

Power
Electronics and Drives










2


Core Courses
:


EEE G541 Distribution Apparatus and

Configurations




[
3 2 5
]


Basic configuration of a distribution set
-
up at the

consumer end. Transformer types, specifications,

performance, protection, and sizing. Types of

cables and insulation, cable parameters, ampacity

and
protection. Ratings of LV switchgear and their

use in selection, switching transients and clearing

time.
Properties of fuses with reference to

ampacity. Met
ers, instrument transformers, and

their application.
Voltage control at distribution

levels. Eleme
ntary concepts of power quality
power factor, frequency,
and harmonic content


EEE G542 Power Electronic Converters






[
3 2 5
]


The importance of the conve
rter as an interface

between source and load. DC
-
DC converters:

Buck,
boost, and buck
-
boost configurations. ACDC

converters: Diode and thyristor converters in

single and
three phase. Inversion in thyristorised

converters and applications of line commutated

inverters. DC
-
AC converters: Switch mode voltage

source inverters in single and three phase, PWM

operation of
different types, VSI’s operating in

multi
-
levels, space vector modulation techniques.

AC
-
AC
converters: Thyristor fed AC loads, the

cycloconverte
r. Matrix converter arrays and their

operation as
DC
-
DC and DC
-
AC converters
.


EEE G543 Power Device Microelectronics and

Selection



[

3 0 3
]


Thermal features of power device packaging, the

issues of
R
θJC

and
R
θCS
, heat flow and effect on

device temperature, heat sink design and

selection. The two
-
layer junction behaviour, the

concept of
drift region, characterisation of power

diodes. The base operation in a thick film BJT,

steady state
characteristics, turn ON and turn

OFF times, the multi
stage power Darlington. The

four
-
layer junction
behaviour, two transistor model

of a thyristor, dynamic model for a four layer

junction device. GTO
thyristors, the turn OFF

mechanism in four

layer junction devices, current
technological problems.
MOS opera
tion and

characteristics, characterisation and structure of

the power MOSFET.
Development of the

MOSFET to IGBT, technological advantages,

characterisation, and dynamic behaviour. Current

technological problems in insulated gate

t
echnologies. Introduction
to matrix converters
.


EEE G545 Control and Instrumentation for

Power Electronic Systems

[
3 0 3
]


The regulation and control problem with reference

to power electronic converters. Converter models

for feedback: basic converter dynamics, fast

switching, piece
-
wise linear models, discrete
-
time

models. Voltage mode and current mode controls

for DC
-
DC converters, comparator based control

for
rectifier systems, proportional and

proportional
-
integral control applications. Control

design based on
lin
earisation: transfer functions,

compensation and filtering, compensated

feedback control systems.
Hysteresis control

basics, and application to DC
-
DC converters and

inverters. General boundary
control: behaviour

near a boundary, and choice of suitable

boun
daries. Basic ideas of fuzzy control

techniques, and performance issues. Sensors for

power electronic circuits, speed and torque

transducers.



EEE G552 Solid State Drives








[
3 2 5
]


Introduction to the drive system: requirements,

components and benchmarks; Review of motor

theory;
Power electronic control of motors:

requirements and operational issues; Static speed

control of
induction motors: the AC power controller,

slip energy recovery, VSI and CSI controlled

induction
motors; Sp
eed control of synchronous

motors and associated machines; The problem of

DC motor
speed control: rectifier and chopper

controllers; Advanced induction motor drive control:

vector
3


control, current modulation, importance

of microcontroller based systems; Or
ganisation of

VI
-
95

microcontrollers: sensing and actuation of signals,

interrupt handling and timing, priority of tasks in a

microcontrolled drive system.


EEE G546 Systems Simulation Lab









[

4

]


Simulation tutorial problems on single
-

and

three

phase

AC
-
DC converters, DC
-
DC buck
-
, boost
-
,

and buck
-
boost converters, DC
-
AC inverters in

single and three phase with different levels of

control
complexity. Simulation of practical

applications from utility and drives. May also

include a small
pro
ject
.


BITS G540 Research Practice








[
4]


This course is designed to train the students towards

acquiring competence in research methodologies.

The course will be conducted in terms of

actual participation in Research and Development

Work.
Each student will be assigned to a faculty

member to work on specified projects. The student

will be
required to present a number of seminars

in his research area in a structured manner.


E
le
ctives
:


BITS C462 Renewable Energy








[
3 0 3
]


Introduction of renewable energy, advantages, potential,status of development, broad details of
different

renewable energy systems such as solar,

wind, biomass, microhydel, geothermal etc;
Renewable

energy
development policy, Renewable

energy industries, international co
-
operation,
HRD

and career growth opportunities, consultancy

areas and future thrust areas in renewable energy

development
.


EEE G544 Steady State and Dynamics of

Electric Motors




[
3 2 5
]


Direct current machines, dynamic characteristics

of PM and shunt DC motors. The Reference

Frame
theory, balanced steady state phasor

relations and voltage equations. Symmetrical

induction machines:
commonly used reference

frames and per
-
unit system, analysis of steady

state and dynamic operation
and free acceleration

characteristics from different reference frames.

Synchronous machines:
equations in different

reference frames, per
-
unit system, steady state

analysis, dynamic analysis for
load changes and

faults. Brushless DC machines: voltage and

microcontrollers: sensing and actuation
of signals,

interrupt handling and timing, priority of tasks in a

microcontrolled drive system



EEE G553 Utility Applications of Power

Electronics





[
3 0 3
]


Static excitation systems: converters as used in

SES, control and the IEEE types, enhancement of

stability. HVDC transmission: configurations of

line
-
commutated converters, constant current and

constant extinction angle control at devic
e

terminal level, individual phase and equidistant

pulse firing
control at device level, active and

reactive power considerations. FACTS:

impedance type and
inverter type FACTS devices,

the static var compensator, the thyristor controlled

series reactor, t
he
STATCOM and its

developments in the form of UPFC and SSSC.

Active filters: the power quality
problems at

distribution level, inverter control by transient p
-
q

theory, configuration of active filters
and their

control, existing bottlenecks.






4


EEE G554
Soft Switching Converter

Technologies




[
3 0 3
]


Series, parallel, series
-
parallel resonant DC
-
DC

converters, half and full bridge topologies, analysis

and design. Sinusoidal analysis of resonant

converters, soft switching, load resonant propert
ies,

exact
characteristics. Soft switching mechanisms

of semiconductor devices, zero current and

zero voltage
switching quasi resonant converters,

resonant switch

topologies, soft switching in PWM

converters

and inverters, multi resonant converters,

contr
ol of resonant and soft switching converters,

EMI
suppression, snubbers, load resonant

converters, passive components at high frequencies
.